NRCS Conservation Practices included in COMET-Planner are only those that have been identified as having greenhouse gas mitigation and/or carbon sequestration benefits on farms and ranches. This list of conservation practices is based on the qualitative greenhouse benefits ranking of practices prepared by NRCS.

How are your carbon sequestration and greenhouse gas emission reduction estimates calculated?

Emission reduction coefficients were derived from recent meta-analyses and reviews. Coefficients were generalized at the national-scale and differentiated by dry and humid climate zones.  More information on quantification methods can be found in the COMET-Planner Report.

Each emission reduction is calculated using the following equation:

Emission reduction = Area (acres) * Emission Reduction Coefficient (ERC)

Emission Reduction Coefficients (ERC)
(tonnes CO2 equivalent per acre per year)
Greenhouse Gases
Carbon Dioxide
Nitrous Oxide
NRCS Conservation Practices
Recommended use of COMET-Planner
This evaluation tool is designed to provide generalized estimates of the greenhouse gas impacts of conservation practices and is intended for initial planning purposes.  Site-specific conditions (not evaluated in this tool) are required for more detailed assessments of greenhouse gas dynamics on your farm.  Please visitCOMET-Farm if you would like to conduct a more detailed analysis.
Please contact Amy Swan ( for more information